EP0602231A1 - Machine hydrostatique a compensation de la poussee axiale. - Google Patents

Machine hydrostatique a compensation de la poussee axiale.

Info

Publication number
EP0602231A1
EP0602231A1 EP93915726A EP93915726A EP0602231A1 EP 0602231 A1 EP0602231 A1 EP 0602231A1 EP 93915726 A EP93915726 A EP 93915726A EP 93915726 A EP93915726 A EP 93915726A EP 0602231 A1 EP0602231 A1 EP 0602231A1
Authority
EP
European Patent Office
Prior art keywords
rotors
hydrostatic machine
channels
shaft
bores
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93915726A
Other languages
German (de)
English (en)
Other versions
EP0602231B1 (fr
Inventor
Gerhard Faehnle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JM Voith GmbH filed Critical JM Voith GmbH
Publication of EP0602231A1 publication Critical patent/EP0602231A1/fr
Application granted granted Critical
Publication of EP0602231B1 publication Critical patent/EP0602231B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0452—Distribution members, e.g. valves
    • F04B1/0465—Distribution members, e.g. valves plate-like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
    • F04B1/107—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
    • F04B1/1071—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
    • F04B1/1074—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks with two or more serially arranged radial piston-cylinder units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/005—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons

Definitions

  • the present invention relates to a hydrostatic machine (radial piston machine) according to the preamble of claim 1.
  • Such a single-flow so-called side-loaded hydrostatic machine is known from DE-OS 39 05 936. Measures and means are provided to absorb or compensate for the axial thrust forces acting on the cylinder star (rotor) via the (drive) shaft. However, it has been shown that the axial forces are unfavorably large and that the shaft is also subjected to a bending moment resulting from the radial forces on one side, i.e. is burdened. Another problem is that for pumps with a large delivery volume, the radial dimensions of the hydrostatic machine are relatively large.
  • the object underlying the present invention is to provide a hydrostatic machine of the generic type, in which the axial (SChub) force e with the same delivery volume and with the same flow conditions are only half as large as in the known hydrostatic machine and at which has no, or at most only a minimal, bending moment on the shaft.
  • Claim 1 specified hydrostatic machine are the subject of the dependent claims.
  • Fig. 1 shows a longitudinal section through the hydrostatic
  • Fig. 2 shows a cross section through the hydrostatic
  • Fig. 3 shows a cross section through the hydrostatic
  • the radial piston machine representing the hydrostatic machine has a housing 1 with a cylindrical interior 2.
  • the interior 2 is closed from both sides via a housing cover 3, 4 and is separated into two equal-sized sub-spaces 6, 7 by an annular intermediate floor 5 arranged axially centrally to the cylindrical interior 2.
  • a cam ring 8, 9 is supported, both of which are connected to one another via at least one connecting shaft 10 and via bolts 11 and the
  • Housing covers 3.4 are fixed opposite. On the inside 12.13 of the lifting rings 8.9 slide in itself
  • each one of the rotors 18, 19 forming the cylindrical star which in turn are coupled in a rotationally fixed and axially fixed manner to a shaft 20 driven via a drive connector 20 '.
  • Rotor 18/19 starts, but from two, which act synchronously with each other as a delivery or pumping unit (which ultimately doubles with radially identical dimensions
  • the two rotors 18, 19 are in terms of their
  • the function as a pump element is coupled or functionally connected to one another in a coordinated manner as follows:
  • axial lateral control gussets 21, 22 are provided facing one another, via which the bores 16, 17 to the intermediate floor 5 are open.
  • These control slots 21, 22 in turn correspond to control discs (axial slices) 25,26 incorporated kidney-shaped (see Fig. 3) channels 23,24.
  • the control disks 25, 26 are inserted in corresponding recesses on both sides of the intermediate floor 5.
  • connecting channels 27, 28 are machined transversely throughout, so that both
  • Rotors 18, 19 are connected to one another via their displacement elements - and can work together as a pump or hydrostatic machine; This creates a double-flow hydrostatic machine or radial piston machine, the connecting channels 27, 28 forming the inlet and outlet channels and accordingly being open to the outside.
  • the rotors 18, 19 are fixed on the shaft 20 in a rotationally fixed and axially fixed manner.
  • one rotor (19) can be formed in one piece with the shaft 20, while the second rotor (18) is fixed via a clamping nut 37.
  • the axial fixation of the two rotors 18, 19 on the shaft 20 ensures, on the one hand, that the axial forces do not have to be supported on the housing covers 3, 4, and, on the other hand, that the axial forces with the spacing of the kidney-shaped channels 23, 24 from The central axis of the shaft 20 results in a resulting torque which is approximately the same size as the bending moment which the pistons 15 generate due to the pressure medium and their distance from the bearing pins 35, 36 of the shaft 20.
  • the gap required for safe running of the rotors 18, 19 relative to the control disks (axial disks) 25, 26 should be due to the resulting tightness can be kept as low as possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

Une machine hydrostatique (machine à pistons radiaux) comprend un ensemble de cylindres agencés en étoile et monté solidaire en rotation sur un arbre de manière à ne pas se déplacer axialement. L'ensemble de cylindres comprend une pluralité d'alésages radiaux pourvus d'éléments de refoulement (pistons et têtes coulissantes) coulissant sur la face intérieure d'un anneau. Afin de régler la quantité de fluide hydraulique refoulé, les alésages sont en communication avec des canaux de refoulement (haute-basse pression) qui s'ouvrent latéralement dans les cylindres en étoile par des fentes de régulation. L'ensemble de cylindres en étoile comprend deux rotors mutuellement espacés dont les alésages sont pourvus de fentes de régulation en communication les unes avec les autres, notamment opposées. Un fond intermédiaire du boîtier situé entre les deux rotors comprend des disques de commande (disques axiaux) opposés aux rotors et pourvus de canaux correspondants aux fentes de régulation, ainsi que de canaux de refoulement qui relient des canaux réunis appartenant aux deux rotors.
EP93915726A 1992-07-02 1993-06-29 Machine hydrostatique a compensation de la poussee axiale Expired - Lifetime EP0602231B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4221705 1992-07-02
DE4221705A DE4221705A1 (de) 1992-07-02 1992-07-02 Hydrostatische Maschine mit axialem Schubausgleich
PCT/EP1993/001656 WO1994001676A1 (fr) 1992-07-02 1993-06-29 Machine hydrostatique a compensation de la poussee axiale

Publications (2)

Publication Number Publication Date
EP0602231A1 true EP0602231A1 (fr) 1994-06-22
EP0602231B1 EP0602231B1 (fr) 1996-08-28

Family

ID=6462310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93915726A Expired - Lifetime EP0602231B1 (fr) 1992-07-02 1993-06-29 Machine hydrostatique a compensation de la poussee axiale

Country Status (6)

Country Link
US (1) US5452646A (fr)
EP (1) EP0602231B1 (fr)
JP (1) JPH06511533A (fr)
AT (1) ATE142000T1 (fr)
DE (2) DE4221705A1 (fr)
WO (1) WO1994001676A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706539B1 (fr) * 1993-06-14 1995-09-01 Poclain Hydraulics Sa Ensemble de deux moteurs à fluide sous pression.
GB9525028D0 (en) * 1995-12-06 1996-02-07 Unipat Ag Hydrostatic piston machine
CA2573137C (fr) * 2004-07-07 2016-11-15 Pyrotek Inc. Pompe a metal en fusion
CN104832393B (zh) * 2015-04-16 2017-04-12 天津工程机械研究院 多联径向柱塞泵
CN107299888B (zh) * 2016-04-15 2020-10-16 罗伯特·博世有限公司 静液压的径向柱塞机
WO2018205015A1 (fr) * 2017-05-06 2018-11-15 Kinetics Drive Solutions Inc. Variateur hydrostatique basé sur des machines à pistons radiaux

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044412A (en) * 1958-05-13 1962-07-17 New York Air Brake Co High pressure hydraulic pump or motor
GB1003122A (en) * 1961-01-27 1965-09-02 Nat Res Dev Improvements in hydraulic ball piston pumps and motors
DE1653349A1 (de) * 1966-07-29 1970-10-22 Ardie Werk Gmbh Radial-Kolbenmaschine
DE2022846A1 (de) * 1970-05-11 1971-11-25 Josef Maas Hydraulische Foerderer zur Erzielung eines hoechst gleichmaessigen und temperaturunabhaengigen Gesamtfoerderstromes fuer eine geschlossene als auch halboffene Kreislauffoerderung durch Doppelreihenverdraenger mit Phasenverschiebung
US3924516A (en) * 1972-07-06 1975-12-09 Deere & Co Hydraulic pump or motor
DE2301448C3 (de) * 1973-01-12 1980-01-24 Robert Bosch Gmbh, 7000 Stuttgart Hydrostatische Radialkolbenpumpe
US4078229A (en) * 1975-01-27 1978-03-07 Swanson Wyn K Three dimensional systems
DE7605633U1 (de) * 1976-02-25 1977-08-18 Robert Bosch Gmbh, 7000 Stuttgart Radialkolbenmehrfachpumpe
US4131056A (en) * 1977-12-15 1978-12-26 Fiat-Allis Construction Machinery, Inc. Pilot controlled variable displacement fluid motor
WO1980001092A1 (fr) * 1978-11-24 1980-05-29 C Hart Mecanisme d'entrainement
HU180571B (en) * 1980-04-01 1983-03-28 Danuvia Koezponti Szerszam Hydraulic transformer
GB2137746A (en) * 1983-04-05 1984-10-10 Hewlett Packard Co Apparatus for Detecting Deviations of Position from a Reference
DE3440219A1 (de) * 1983-11-03 1985-05-15 Unipat AG, Glarus Hydrostatische maschine
JPS6392945A (ja) * 1986-10-07 1988-04-23 Casio Comput Co Ltd 光記録媒体
JPH02151825A (ja) * 1988-12-05 1990-06-11 Olympus Optical Co Ltd 微分干渉顕微鏡
DE3905936A1 (de) * 1989-02-25 1990-09-06 Bosch Gmbh Robert Hydrostatische maschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9401676A1 *

Also Published As

Publication number Publication date
ATE142000T1 (de) 1996-09-15
DE59303571D1 (de) 1996-10-02
WO1994001676A1 (fr) 1994-01-20
JPH06511533A (ja) 1994-12-22
EP0602231B1 (fr) 1996-08-28
DE4221705A1 (de) 1994-01-05
US5452646A (en) 1995-09-26

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